/* Copyright (c) 2022-2022, LiWangQian<liwangqian@huawei.com> All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 *    of conditions and the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef LOGPP_LOG_KEY_H
#define LOGPP_LOG_KEY_H

#include "logpp/configs.h"
#include "logpp/utils/hash.h"

#include <cstdint>
#include <cstddef>
#include <functional>

LOGPP_NS_BEGIN

class log_key {
public:
    log_key(size_t log_hash, uint16_t line) noexcept
        : log_hash_{log_hash}
        , line_{line}
    {}

    auto hash() const noexcept { return this->log_hash_; }
    auto line() const noexcept { return this->line_;     }

private:
    size_t log_hash_{0};
    uint16_t line_{0};
};

static inline bool operator==(const log_key &x, const log_key &y) noexcept
{
    return x.line() == y.line();
}

LOGPP_NS_END

template <>
class std::hash<logpp::log_key> {
public:
    size_t operator()(const logpp::log_key &key) const noexcept
    {
        return key.hash();
    }
};

#endif
